John Singleton Copley Biography

John Singleton Copley

(Boston, 1737-London, 1815) American painter.He devoted himself to history painting and portraiture ( Brook Watson and the Shark , 1778; The Death of Chatham , 1780).

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Phoenician numbers

In History Today Online we explained in a previous post which were the Arabic numerals, but the truth is that they are not the only ones, and although somewhat complicated to understand, the truth is that the Phoenician numbers are perhaps much more difficult.In History Today Online we talk to you now of which are the Phoenician numbers. The Phoenicians also known as Canaanites, although they were a civilization that occupied a region called Canaan and was a territory that currently encompasses Israel, Syria and Lebanon.They always stood out for their art, closely linked to the different Mediterranean influences and as not for an alphabet that they created and that is in fact the origin of the alphabet that we know today, they also had a numerical system and that we tried to decipher below. The Phoenician Numbers: The main basis of the Phoenician numbers, are the angles and the stripes since these are the base they used to create the different numbers.Depending on how e...

John betjeman Biography

John Betjeman (London, 1906-Trebethrick, 1984) British poet.He succeeded C.D.Lewis as "Poet Laureate" (1972).He became known with Selected Poems (1948).His work, technically impeccable and tinged with subtle humor, uses traditional metric forms ( Summoned by bells , 1960; High and low , 1966).

Heinrich maier Biography

Heinrich Maier (Heidenheim, 1867-Berlin, 1933) German philosopher.He produced a "critical realism", along the lines of H.Driesch.He is the author, among other works, of Aristotle's syllogistics (1896-1900) and of The philosophy of reality (1926-1935).

Humberto Fernández Morán Biography

Humberto Fernández Morán (Maracaibo, Venezuela, 1924-Stockholm, Sweden, 1999) Venezuelan scientist.Inventor of the diamond blade, he was a pioneer in electron microscopy techniques and decisive in the process of scientific modernization of his country, in which he founded the Venezuelan Institute of Neurology and Brain Research (IVNIC). Humberto Fernández carried out his first studies between the capital of Zulia, Curaçao and New York.In 1936 he entered the German School of Maracaibo and the following year he left for Germany, where he finished high school at the Schulgemeinde Wichersdorf high school in Sallfeld.At the age of fifteen, he began his medical studies at the University of Munich.During the Second World War, six days before the Normandy landing (1944), in a basement and under low aerial bombardment, he graduated in medicine with Summa cum laude . Humberto Fernández Morán The following year he revalidated his degree at the Central University of Venezuela and worked ...

Hélder Câmara Biography

Hélder Câmara (Hélder Pessoa Câmara; Fortaleza, 1909-Recife, 1999) Brazilian Catholic Archbishop whose defense of social justice, as well as his attitude of condemnation of Latin American dictatorships, made him a symbol of the so-called "Church of the poor" and one of the most prominent figures in liberation theology, along with theologians such as Leonardo Boff or Jon Sobrino.He entered the seminary in 1923, and was ordained a priest in 1931, being transferred in 1936 to Rio de Janeiro, where he worried about the living conditions of the inhabitants of the "favelas". Hélder Câmara Appointed auxiliary bishop of Rio in 1952, he contributed decisively to founding the National Conference of Brazilian Bishops, in close collaboration with Monsignor Giovanni Montini (the future Pope Paul VI), then Secretary of State of the Vatican.From his position as general secretary of said organization, he promoted the creation of the Latin American Episcopal Conference (CELAM...

X-ray history

The X-rays were discovered in 1895 and from there they became a very revolutionary application in many branches of science, from astronomy to radiographs that we have not done so many times.the 120th anniversary of the X-rays knowing his inventor and the research that led him to such an important scientific advance. Article index Who invented the X-rays? The inventor or, rather, the person who discovered the X-rays was Wilhelm Conrad Rontgen , a German physicist who was focused on the field of electromagnetics Nothing else to present his discovery, Rontgen's theory received great attention from critics and public, and was translated into French, English or Russian. Although it is not a name as well known today as that of others you celebrate writers, the name of Wilhelm Conrad Rontgen is written in gold letters in the medical field, where he has had and has and numerous applications.The importance of his discovery was such in his day that he was the first Nobel Prize ...

Jean Charles Peltier Biography

Jean Charles Peltier (Ham, France, 1785-Paris, 1845) French physicist.Watchmaker by profession, Jean Peltier left his trade when he was thirty years old, to dedicate himself fully to scientific research in the field of electricity. Jean Peltier In 1834 he discovered that when an electric current circulates through a conductor made up of two different metals, joined by a weld, the latter heats up or cools down according to the direction of the current (Peltier effect).This effect, which would be confirmed by the famous Russian physicist Heinrich Lenz, led to research by James Prescott Joule and William Thomson on analogous thermoelectric phenomena and has been of great importance in the recent development of non-polluting cooling mechanisms. Peltier is also owed the introduction of the concept of electrostatic induction (1840), referred to the modification of the distribution of electric charge in a material, under the influence of a second object close to it and that has an el...

Jean-Jacques Servan-Schreiber Biography

Jean-Jacques Servan-Schreiber (Paris, 1924) French journalist and politician.He founded the left-liberal weekly LÉxpress , which he directed until 1969.Secretary (1969-1971) and president (1971-1979) of the Radical Party, in 1974 he briefly held the Ministry of Reform.He is the author of various political essays: The American Challenge (1967), Regional Power (1971), The Knowledge Revolution (1986), The World Challenge (1988), Eclaircissement (1992) and Los spulteros (1993).

Franz lachner Biography

Franz Lachner (Rain, 1803-Munich, 1890) German composer and conductor.He was educated in the Viennese environment of Schubert and Beethoven and was a Kapellmeister at the Mannheim court and conductor of the Munich opera.His classical-oriented work includes operas, symphonies, suites, and chamber and sacred music.

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